Benjamin Franklin (1706-1790),American scientist,inventor and statesman. Franklin was one of the Founding Fathers of the United States. He was also the first to show that lightning is electricity by flying a kite carrying a metal key during a thunderstorm. This led to his invention of the lightning rod to protect buildings from lightning strikes. He also invented fins for swimming,bifocal glasses,a urinary catheter and showed that evaporation cooled objects. He also helped shape the revolution and was a signatory of the Declaration of Independence. Photographed circa 1763-1785 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 3636 px × 4902 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |